When Is The Equinox 2024 Uk 2024. When it is, why it happens and what to look for. Autumn equinox 2024 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator,.

When does each season start in 2024?  — the harvest moon in 2024 is not only the nearest full moon closest to the autumn equinox but it has two rare features this year.